Composition plug.



106. COMPOSITIONS,

COATING R PLASTIC.

1 l fiaper an 0c a quantity of cement to harden the 'whlch is added andintermixed a binding IRA E. FARR, 0]? WATERTOWN, NEW YORK.

COMPOSITION PLUG.

1 259,5()2 Specification of Letters Patent.

No Drawing.

Patented Mar. 19, 1918. Application filed larch 12, 1917. Serial No.154,289.

To all whom it mayponcern:

Be it known that I, IRA E. FARR, a citizen of the United States,residing at Watertown, in the county of Jefi'erson and State prising thecomposition, are not liable to of New York, have invented certain newand shrink or get out of shape no matter how useful Improvements inComposition Plugs, long they are used. My process or method of which thefollowing'is a specification. Will now be described.

The invention relates to an improved plug Inikeprocess of preparing thecomposior bushing capable of a wide field of use, tion, news'p'fi''fs orother suitable waste paalthough specifically adapted for supporting perare first beaten by the well-known pulp rolls of wrapping and otherpaper, and to beaters until finely broken up. Thigpnlp the compositionof which said plug is comn ins a liber l M f wat r I er posed. e eating.be next step The composition of materials out of which onsis s 0 a 1n epulp approximately the plug is composed preferably consists of 110% inweight of a suitable cementitious a pulpy substance" incorporated andthan substance, such as Portland cement or analooughly mixed with ahardening material, to gous substance, w 10 1s en m1xe with the pulp byany suitable agitating means. The third step consists of addingapproximately then pressed in any preferred manner in 10% in weight offinely powdered slaked bushings of the desired shape. ime and againagitating all of saidlngredi- The material or ingredients comprisingenis until they are thoroughly incorporated the composition of which myimproved and the whole becomes a relatively thick plugs are made,consists of a pulp, preferpaste. The paper stock is in such proporblder' -0 u vwaste tion (about 60 as to render the plugs e 1 e, common ypaper fibrous and 1g t, while the cement and lime act as binders, and atthe same time tend to solidify the pulpy mass, and when the compositionis suita y compressed, and allowed in common use, without increasing thecost of the plugs and at the same time my plugs,

cause of the nature of the ingredients comingredient, all beingthoroughly mixed and mass to a certain extent, a quantity'of lime toco-act with the cement as a binder, and

water in suflicient quantity to render the to dry and harden, the pl gswil Stand c nsiderable crushing strain and rough handling without gettinout of shape. By the use of the cement an lime the bodies of the plugsare more solid and are less liable to shrink or warp or otherwise getout of shape. After the composition is prepared as described, it isdelivered to a machine (which is not illustrated as it forms no part ofthe .present invention, it being understood that any of the conventionalmachinesmay be employed for this purpose), which is ar- 'ranged to forceand compress measured quantities of the composition into a mold, becomerie out, and many of the wooden and during the molding operation pract1- plugs when thoroughly dried, crack or split, cally all of the surpluswater contained m and are therefore unfit for use. Furtherthecomposition is squeezed out, so that when more, a large proportion ofthe wooden the plugs are e ected from the mold they plugs warp orotherwise get out of shape so are of predetermined uniform size andshape that they do not properly fit the openings and they are alsorelpjgel hard and in the ends of the rolls, and the rolls are thereforeliable to get out of shape or collapse, which interferes with the readyunwinding of the paper when wanted for wrappin purposes. My compositionplugs composition pasty to a degree .suitable for properly molding andcompressing into a compact and smooth body.

Heretofore, plugs for paper rolls have usually been turned up out ofwood, and bored out to receive shafts or rods upon which the rolls aremounted and rotatable as the paper is used. These wooden plugs areturned up in several standard sizes intended to snugly fit in the endsof the different size rolls of paper. As a rule, the wood from which theplugs are made is green or wet and the In invariably shrink when theyand light. Following the molding of the plugs, the latter areartificially dried for an hour or two, and then they are ready forshipment and 'use.

are ed to replace the old wooden plugs Y The material of which the plugsare made 119 smooth, as well as comparatively tenacious is composed ofwood pulp, preferably oldpaper stock, lime, cement, and water, asdescribed, which is suitably mixed and worked until it becomes arelatively thick paste. The relativel thick paste, composed of theingredients a ove referred to, or their equivalents which will form abushing of this general character are delivered to any of the well knowntypes of forming machines, which will automatically turn out thebushings in rapid order by pressing and forming the pasty substance intothe desired formations.

Having thus described the invention, what I claim is:

1. The herein described plastic composition for molding plugs for paperrolls, consisting of a fluid wood pulp, powdered slaked lime, andcement, substantially as'described.

2. The herein described lastic composition for making plugs, consistingof old paper stock, slaked lime, cement, and water, substantially asdescribed.

3. The herein described plastic composition, consisting of old paperstock, sixty parts, finely powdered slaked lime, ten parts, and cement,thirty parts, and water substantially as described.

4. A bushing of the character described composed of a plasticcomposition consisting of paper stock, slaked lime and cement, and afluid, substantially as described.

In testimony whereof I afiix my signature.

IRA E. FARR.

copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents. Washington, D. 0.

